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<a href="spi_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/**************************************************************************/</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="preprocessor">#include &quot;<a class="code" href="spi_8h.html">spi.h</a>&quot;</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="preprocessor">#include &quot;gd32f1x0.h&quot;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="preprocessor">#include &quot;<a class="code" href="config_8h.html">config.h</a>&quot;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"><a class="line" href="spi_8c.html#abbbc27ff0ee7fe2241ea2935b92d66cc">   19</a></span><span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <a class="code hl_function" href="spi_8c.html#abbbc27ff0ee7fe2241ea2935b92d66cc">spi_readwrite_halfworld</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> data) {</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> buffer;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>    <span class="keywordflow">while</span> (RESET == spi_i2s_flag_get(SPI0, SPI_FLAG_TBE));</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span>    <span class="comment">/* send this data through spi0 */</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span>    spi_i2s_data_transmit(SPI0, data);</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>    <span class="keywordflow">while</span> (RESET == spi_i2s_flag_get(SPI0, SPI_FLAG_RBNE));</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>    <span class="comment">/* get data received through spi0 */</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>    buffer = spi_i2s_data_receive(SPI0);</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    <span class="keywordflow">return</span> buffer;</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>}</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="spi_8c.html#aa913932d23eead8cf414e5d605b9175d">   35</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="spi_8c.html#aa913932d23eead8cf414e5d605b9175d">spi_config</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>    spi_parameter_struct spi_init_struct;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>    <span class="comment">/* enable GPIO clock and SPI0 clock*/</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>    rcu_periph_clock_enable(RCU_GPIOA);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>    rcu_periph_clock_enable(RCU_SPI0);</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>    <span class="comment">/* SPI0 GPIO config: SCK/PA5, MISO/PA6, MOSI/PA7 */</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>    gpio_af_set(GPIOA, GPIO_AF_0, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>    <span class="comment">/* SPI0 GPIO config: CS/PA4 */</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>    gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_4);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>    <span class="comment">/* pull up CS pin to end sending data */</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>    gpio_bit_set(GPIOA, GPIO_PIN_4);</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>    <span class="comment">/* SPI0 parameter config */</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>    spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>    spi_init_struct.device_mode = SPI_MASTER;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>    spi_init_struct.frame_size = SPI_FRAMESIZE_16BIT;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>    spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_2EDGE;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>    spi_init_struct.nss = SPI_NSS_SOFT;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>    spi_init_struct.prescale = <a class="code hl_define" href="config_8h.html#a3b13b9a69505b192a40569ac6bae91f6">SPI_PRESCALE</a>;</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>    spi_init_struct.endian = SPI_ENDIAN_MSB;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>    spi_crc_off(SPI0);</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>    spi_init(SPI0, &amp;spi_init_struct);</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>    <span class="comment">/* SPI0 enable */</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>    spi_enable(SPI0);</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>}</div>
<div class="ttc" id="aconfig_8h_html"><div class="ttname"><a href="config_8h.html">config.h</a></div><div class="ttdoc">used to place important parameter configurations for users</div></div>
<div class="ttc" id="aconfig_8h_html_a3b13b9a69505b192a40569ac6bae91f6"><div class="ttname"><a href="config_8h.html#a3b13b9a69505b192a40569ac6bae91f6">SPI_PRESCALE</a></div><div class="ttdeci">#define SPI_PRESCALE</div><div class="ttdoc">set SPI frequency to 72 / 16 = 4.5MHz</div><div class="ttdef"><b>Definition:</b> <a href="config_8h_source.html#l00034">config.h:34</a></div></div>
<div class="ttc" id="aspi_8c_html_aa913932d23eead8cf414e5d605b9175d"><div class="ttname"><a href="spi_8c.html#aa913932d23eead8cf414e5d605b9175d">spi_config</a></div><div class="ttdeci">void spi_config(void)</div><div class="ttdoc">configure spi0 periph and its gpios</div><div class="ttdef"><b>Definition:</b> <a href="spi_8c_source.html#l00035">spi.c:35</a></div></div>
<div class="ttc" id="aspi_8c_html_abbbc27ff0ee7fe2241ea2935b92d66cc"><div class="ttname"><a href="spi_8c.html#abbbc27ff0ee7fe2241ea2935b92d66cc">spi_readwrite_halfworld</a></div><div class="ttdeci">unsigned short spi_readwrite_halfworld(unsigned short data)</div><div class="ttdoc">spi0 transmit data for sc60228</div><div class="ttdef"><b>Definition:</b> <a href="spi_8c_source.html#l00019">spi.c:19</a></div></div>
<div class="ttc" id="aspi_8h_html"><div class="ttname"><a href="spi_8h.html">spi.h</a></div><div class="ttdoc">this is the header file of spi.c.</div></div>
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